Review Changes in Git: A Practical Guide

After rechecking the deposit details, Jerry realizes that the string length cannot be negative, so he decides to change the type of my_strlen function.

Jerry uses the git log command to observe the log details.

 [jerry @ CentOS project] $ git log 

The above command will produce the following result:

 commit cbe1249b140dad24b2c35b15cc7e26a6f02d2277 
 Author: Jerry Mouse 
 Date: Wed Sep 11 08:05:26 2013 +0530 

 Implemented my_strlen function 

Jerry uses the git show command to check the deposit details. Git specifies the command to be taken from the SHA-1 deposit ID as a parameter.

 [jerry @ CentOS project] $ git show cbe1249b140dad24b2c35b15cc7e26a6f02d2277 

The above command will produce the following result:

 commit cbe1249b140dad24b2c35b15cc7e26a6f02d2277 
 Author: Jerry Mouse 
 Date: Wed Sep 11 08:05:26 2013 +0530 

 Implemented my_strlen function 


 diff --git a / string.cb / string.c 
 new file mode 100644 
 index 0000000.187afb9 
 --- / dev / null 
 +++ b / string.c 
 @@ -0,0 +1,24 @@ 
 + # include 
 + 
 + int my_strlen (char * s) 
 + { 
 + 
 char * p = s; 
 + 
 + 
 while (* p) 
 + ++ p; 
 + return (p -s); 
 + 
 } 
 + 

He changes the type of function from int to size_t. After checking the code, he reviews the changes by running git diff.

 [jerry @ CentOS project] $ git diff 

The above command will produce the following result:

 diff --git a / string.cb / string.c 
 index 187afb9.7da2992 100644 
 --- a / string.c 
 +++ b / string.c 
 @@ -1,6 +1,6 @@ 
 #include 

 -int my_strlen (char * s) 
 + size_t my_strlen (char * s) 
 { 
 char * p = s; 
 @@ -18,7 +18,7 @@ int main (void) 
 }; 
 for (i = 0; i <2; ++ i) 
 { 
 - printf ("string lenght of% s =% dn", s [i], my_strlen (s [i])); 
 + printf ("string lenght of% s =% lun", s [i], my_strlen (s [i])); 
 return 0; 
 }